The beam hardening effect can induce strong artifacts in CT images, which result in severely deteriorated image quality with incorrect intensities (CT numbers). This paper develops an effective and efficient beam hardening correction algorithm incorporated in a filtered back-projection based maximum a posteriori (BHC-FMAP). In the proposed algorithm, the beam hardening effect is modeled and incorporated into the forward-projection of the MAP to suppress beam hardening induced artifacts, and the image update process is performed by Feldkamp–Davis–Kress method based back-projection to speed up the convergence. The proposed BHC-FMAP approach does not require information about the beam spectrum or the material properties, or any additional segmentation operation. The proposed method was qualitatively and quantitatively evaluated using both phantom and animal projection data. The experimental results demonstrate that the BHC-FMAP method can efficiently provide a good correctio...
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Vol.44 No.4 from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/1UqCPvn via IFTTT
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A study using a new computer-aided detection (CAD) algorithm found breast cancers... Read more on AuntMinnieEurope.com Related Reading: ...
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ACS Nano DOI: 10.1021/acsnano.6b08172 from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2naqGyD via...
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Objective The study sought to compare angiographic and clinical outcomes of new-generation drug-eluting stents (DES) versus drug-coated ball...
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Two methods, deposition method and ideal modeling based on lattice constant, are used to prepare three modulation periods’ (1.8 nm Cu/3.6 nm...
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Researchers have used an exciting new technology to successfully switch on dormant tumour suppressor genes in multiple cancer types. Dr Benj...
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Perioperative medicine drives quality improvementAt West Suffolk Hospital, a 400 bed district general hospital in Bury St Edmunds, anaesthet...
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Owing to the peculiarities of forest net primary production humans would appropriate ca. 60% of the global increment of woody biomass if for...
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Dicyclohexyl phthalate (DCHP) is one of the phthalate plasticizers. The objective of the present study was to investigate the effects of DCH...
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